Yellow Jacket Vs Wasp

From this time until her death in the autumn, the queen remains inside the nest, laying eggs. The colony then expands rapidly, reaching a maximum size of 4000 to 5000 workers and a nest of 10,000 to 15,000 cells in late summer. (This is true of most species in most areas; however, Vespula squamosa, in the southern part of its range, may build much larger perennial colonies populated by scores of queens, tens of thousands of workers, and hundreds of thousands of cells. ) At peak size, reproductive cells are built with new males and queens produced. Adult reproductives remain in the nest fed by the workers. New queens build up fat reserves to overwinter. Adult reproductives leave the parent colony to mate. After mating, males quickly die, while fertilized queens seek protected places to overwinter. Parent colony workers dwindle, usually leaving the nest to die, as does the foundress queen. Abandoned nests rapidly decompose and disintegrate during the winter. They can persist as long as they are kept dry, but are rarely used again. In the spring, the cycle is repeated; weather in the spring is the most important factor in colony establishment.